DE112015006679T5 - Line with noise filter - Google Patents

Abstract

It is proposed a line with noise filter, which allows an effective reduction of burst interference in a specific frequency band. A noise filter line (A) comprises line main body (a U-phase wire (11u), a V-phase wire (11v), a W-phase wire (11w)), insulating layers (a U-phase insulating coating (12u), a V-phase Phase insulating coating (12v), a W-phase insulating coating (12w) surrounding each of the line main bodies (11u, 11v, 11w), conductor layers (a U-phase conductor layer (16u), a V-phase conductor layer (12) 16v), a W-phase conductor layer (16w) respectively provided corresponding to the conductor main bodies (the U-phase wire (11u), the V-phase wire (11v), the W-phase wire (11w)), the insulating layers (12u, 12v, 12w) are arranged between the conductor layers (16u, 16v, 16w) and the line main bodies (11u, 11v, 11w), and which in each case in combination with the line main bodies (11u, 11v, 11w) capacitors (a U Phase capacitor (17u), a V-phase capacitor (17v), a W-phase capacitor (17w)) form, and with this Lei terschichten (16u, 16v, 16w) connected inductors (18).

Description

TECHNICAL AREA

The present invention relates to a noise filter line.

TECHNICAL BACKGROUND

Patent Document No. 1 discloses a technique in which a wire harness with three-phase AC power lines is disposed in an electric vehicle between a motor and an inverter device, the wire harness is surrounded by a wire mesh as a measure against troubles generated by the wire harness, and the two ends of the wire mesh are shielded by the shield Motors and a shield panel of the inverter device are connected. The use of the wire mesh for shielding the wire harness in this way makes it possible to prevent interference caused by the motor, the inverter device and the wire harness from affecting surrounding devices or circuits.

PREVIOUS TECHNICAL DOCUMENTS

PATENT DOCUMENTS

• Patent Document No. 1: JP 2010-126043A

OVERVIEW OF THE INVENTION

TASKS TO BE SOLVED BY THE INVENTION

However, using this method of surrounding a wire harness with a wire mesh, it is difficult to effectively reduce surge noises generated by the inverter means in a concrete frequency band.

The present invention has been made on the basis of the above-mentioned circumstances and its object is to provide a line with noise filter, which enables effective reduction of burst interference in a specific frequency band.

MEANS TO SOLVE THE TASK

A noise filter line of the present invention comprises:
a trunk main body;
an insulating layer surrounding the conductive body;
a conductor layer provided corresponding to the line main body, the insulating layer being disposed between the conductor layer and the line main body, and forming a capacitor in combination with the line main body; and
an inductor connected to the conductor layer.

EFFECT OF THE INVENTION

By adjusting the capacitance of the capacitor by changing the length of the conductor layer, the respective areas of the conductor layer and the line main body, the distance between the conductor layer and the line main body, the material of the insulating layer and the like and by adjusting the inductance of the inductor by changing the number of turns Length or the like of a coil, it is possible to effectively reduce transient disturbances in a specific frequency band due to LC resonances.

BRIEF DESCRIPTION OF THE DRAWINGS

1 FIG. 10 is a configuration diagram of a noise filter line of Embodiment 1. FIG.

2 is a cross-sectional view taken along the line XX in FIG 1 ,

3 FIG. 10 is a configuration diagram of a noise filter line of Embodiment 2. FIG.

4 FIG. 10 is a configuration diagram of a noise filter line of Embodiment 3. FIG.

5 FIG. 10 is a configuration diagram of a noise filter line of Embodiment 4. FIG.

EMBODIMENTS OF THE INVENTION

• (a) The noise filter line of the present invention may also have a configuration in which two of the line main bodies are provided in parallel with each other, two of the conductor layers, each one of the two conductor layers corresponding to each one of the two line main bodies via which inductors are connected Conductor layers are connected only to the inductors and each of the inductors is connected to only one of the conductor layers and the other inductor. In this configuration, a surge current in one of the main line bodies can be attenuated by the capacitor and the inductor and dissipated to the other conductor layer, thereby making it possible to reduce common mode noise, which is important when the conductor layer and the inductor are connected to a package ground such as Engine cover are connected.
• (b) The noise filter line of the present invention according to (a) may also include one in the three-phase AC circuit comprising a first line base body, a second line main body included together with the first line main body in the three-phase AC circuit, a third line base common to the first line main body and the second line main body in the three-phase AC circuit, a first conductor layer corresponding to the first line main body, a second conductor layer corresponding to the second line main body, and a third conductor layer corresponding to the third line main body and having a configuration in which the first conductor layer, the second conductor layer and the third conductor layer are interconnected via the inductors, the first conductor layer, the second conductor layer and the third conductor layer are connected only to the inductors and each of the inductors with either the first conductor layer, the second conductor layer or the third conductor layer and with connected to the inductors.

• (c) Die Leitung mit Rauschfilter der vorliegenden Erfindung kann auch eine Ausgestaltung aufweisen, bei welcher eine röhrenförmige Schirmschicht mehrere der Leitungsgrundkörper und mehrere der Leiterschichten zusammen umgibt. Bei dieser Ausgestaltung umgibt die Schirmschicht die Leitungsgrundkörper und ermöglicht es somit auch, zu vermeiden, dass Stoß-Störungen umgebende Einrichtungen oder Schaltungen beeinträchtigen.
• (d) Die Leitung mit Rauschfilter der vorliegenden Erfindung gemäß (c) kann auch eine Ausgestaltung aufweisen, bei welcher die Induktoren innerhalb eines geschirmten Raums angeordnet sind, der von der Schirmschicht umgeben ist. Bei dieser Ausgestaltung kann die Größe im Vergleich zu einem Fall reduziert sein, in welchem die Induktoren außerhalb der Schirmschicht vorgesehen sind.

In this configuration, a surge current in each of the line main bodies can be attenuated by the capacitor and the inductor and dissipated to the other conductor layers, thereby making it possible to reduce common mode noise, which is important when the conductor layer and the inductor are connected to a package ground such as Engine cover are connected.

• (c) The noise filter line of the present invention may also have a configuration in which a tubular shield layer surrounds a plurality of the line main bodies and a plurality of the conductor layers together. In this embodiment, the shielding layer surrounds the main body of the line and thus also makes it possible to avoid that impact disturbances impair surrounding devices or circuits.
• (d) The noise filter line of the present invention according to (c) may also have a configuration in which the inductors are arranged inside a shielded space surrounded by the shielding layer. In this configuration, the size can be reduced as compared with a case in which the inductors are provided outside the shield layer.

Embodiment 1

Embodiment 1 of the present invention will be described below with reference to FIG 1 and 2 described. A noise filter A of Embodiment 1 is connected between a motor 30 and an inverter device 34 disposed mounted in an electric vehicle (not shown) such as an electric car or a hybrid car. In this electric vehicle is powered by an engine cowling 31 which is a housing of the engine 30 is an inverter panel 36 , which is a housing of the inverter device 35 is, and a shielding layer 22 which the panels 31 and 35 connects, a housing mass 40 educated. The line A with noise filter comprises a U-phase wire 11u ("First conductive main body" in the claims), a V-phase wire 11v ("Second conductive main body" in the claims) and a W phase wire 11w ("Third Conduit Body" in the claims), which is a three-phase AC circuit 10 form a shock reduction filter 15 and the shielding layer 22 ,

The U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w are each formed by a stranded wire or a single metal wire (eg, copper, a copper alloy, aluminum, or an aluminum alloy). The outer circumference of the U-phase wire 11u is of a U-phase insulating coating 12u ("Insulating layer" in the claims) surrounded by a plastic. The outer circumference of the V phase wire 11v is of a V-phase insulating coating 12v ("Insulating layer" in the claims) surrounded by a plastic. The outer circumference of the W phase wire 11w is of a W-phase insulating coating 12w ("Insulating layer" in the claims) surrounded by a plastic. In particular, the U-phase wire form 11u and the U-phase insulating coating 12u a coated electrical line. The V-phase wire 11v and the V-phase insulating coating 12v form a coated electrical line. The W phase wire 11w and the W-phase insulating coating 12w form a coated electrical line.

The U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w are arranged parallel to each other. One end of the U-phase wire in each case 11u , the V-phase wire 11v and the W phase wire 11w is connected to an inverter circuit (not shown) of the inverter device 34 connected. The inverter circuit is inside the conductive inverter panel 35 housed, which serves the shield. The other end of the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w is with the windings of the engine 30 connected. The windings are inside the conductive engine cowling 31 accommodated, which has a shielding function.

The shock reduction filter 15 has a tubular U-phase conductor layer 16u ("First conductor layer" in the claims), a tubular V-phase conductor layer 16v and a tubular W-phase conductor layer 16w on. The U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w are each made of metal (eg, copper, a copper alloy, aluminum, or aluminum alloy) and are not directly related to the package ground 40 connected. The outer circumference of the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w is covered with an insulating coating, an insulating film or the like.

The U-phase wire 11u and the U-phase insulating coating 12u are from the U-phase conductor layer 16u surrounded and are in close proximity to each other. In other words, their spatial position relative to each other is such that the U-phase conductor layer 16u and the U-phase wire 11u are in proximity to each other and each other with interposed U-phase insulating coating 12u are opposite. Accordingly, the U-phase wire form 11u , the U-phase insulating coating 12u and the U-phase conductor layer 16u a U-phase capacitor 17u ("Capacitor" in the claims), and the U-phase wire 11u and the U-phase conductor layer 16u serve as electrodes.

In addition, the V-phase wire 11v and the V-phase insulating coating 12v from the V-phase conductor layer 16v surrounded and are in close proximity to each other. In other words, their spatial position relative to each other is such that the V-phase conductor layer 16v and the V-phase wire 11v are in proximity to each other and each other with V-phase insulating coating interposed therebetween 12v are opposite. Accordingly, the V-phase wire is formed 11v , the V-phase insulation coating 12v and the V-phase conductor layer 16v a V-phase capacitor 17v ("Capacitor" in the claims), and the V-phase wire 11v and the V-phase conductor layer 16v serve as electrodes.

Similarly, the W phase wire 11v and the W-phase insulating coating 12w from the W-phase conductor layer 16w surrounded and are in close proximity to each other. In other words, their spatial position relative to each other is such that the W-phase conductor layer 16w and the W phase wire 11w are in proximity to each other and each other with interposed W-phase insulating coating 12w are opposite. Accordingly, the W phase wire is formed 11w , the W-phase insulating coating 12w and the W-phase conductor layer 16w a W-phase capacitor 17w ("Capacitor" in the claims), and the W phase wire 11w and the W-phase conductor layer 16w serve as electrodes.

The shock reduction filter 15 has three inductors 18 each obtained by bending a single metal wire into a coil shape. The U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w are with the engine cowling 31 via a housing connection wire 20 (inductors 18 ) connected. The housing connection wire 20 has three parallel branch wires 21 on that with the U-phase conductor layer 16u , the V-phase conductor layer 16v or the W-phase conductor layer 16w are connected. The middle sections of the parallel branch wires 21 are each with an inductor 18 Mistake. The three inductors 18 are through the parallel branch wires 21 connected in star connection and via the housing connection wire 20 with the engine cowling 31 (Chassis ground 40 ) connected.

The shielding layer 22 is a tubular metal member formed by, for example, a wire mesh or the like. One end of the shielding layer 22 is located near the engine 30 and is with the engine cowling 31 connected so that there is electrical conductivity. The other end of the shielding layer 22 is located near the inverter device 34 and is with the inverter panel 35 connected so that there is electrical conductivity. One from the screen layer 22 Surrounded room serves as a screened room 23 , The shielding layer 22 surrounds the U-phase wire 11u , the V-phase wire 11v , the W phase wire 11w , the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w all in all. In other words, the U-phase wire 11u , the V-phase wire 11v , the W phase wire 11w , the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w (that is, the three capacitors 17u . 17v and 17w ) within the shielded room 23 accommodated. In addition, the three inductors 18 within the shielded room 23 accommodated.

Next, the functions of this embodiment will be described. After the frequency of a through the inverter device 34 generated surge voltage, the lengths of the conductor layers 16u . 16v and 16w , the corresponding surfaces of the conductor layers 16u . 16v and 16w and the line main body (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ), the distances between the conductor layers 16u . 16v and 16w and the main line bodies (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ), the materials for the U-phase insulating coating 12u , the V-phase insulation coating 12v and the W-phase insulating coating 12w and the like appropriately chosen, whereby the capacitance of the capacitors 17u . 17v and 17w is set to be suitable for reducing surge noise at the particular frequency.

What the inductors 18 is concerned, the materials and the cross-sectional areas of the wires used for them (single wires), the number of turns of the coils and the like are chosen appropriately, whereby the inductances of the inductors 18 be adjusted so that they are suitable for reducing surge disturbances at the specific frequency. When the capacitors 17u . 17v and 17w and the inductors 18 set in this way, a surge current flows at a specific frequency across the inductors 18 and the case connector wire 20 in the engine cowling 31 and returns over the shielding layer 22 to the inverter device 34 back, resulting in a reduction of shock interference is achieved. The shielding layer 22 surrounds the cable main body (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ) all in all. The engine cowling 31 and the inverter panel 35 are through the shield layer 22 connected with each other. It should be noted that a conductive means for connecting the engine cowling 31 and the inverter panel 35 not on the shielding layer 22 is limited and also a stranded wire, a single wire, a vehicle body or the like can be used.

The noise filter line A of the embodiment 1 includes the main line body (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ), the insulating layers (the U-phase insulating coating 12u , the V-phase insulation coating 12v and the W-phase insulating coating 12w ), which respectively surround this line main body, the conductor layers (the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w ), which in each case according to the main line bodies (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ) are provided, wherein the insulating layers 12u . 12v and 12w are arranged between the conductor layers and the line main bodies, and which in each case in combination with the line base bodies 11u . 11v and 11w Capacitors (the U-phase capacitor 17u , the V-phase capacitor 17v and the W-phase capacitor 17w ) and those with these conductor layers 16u . 16v and 16w connected inductors 18 ,

Adjusting the capacitance of the capacitors 17u . 17v and 17w by appropriately choosing the lengths of the conductor layers 16u . 16v and 16w , the corresponding surfaces of the conductor layers 16u . 16v and 16w and the line main body (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ), the distances between the conductor layers 16u . 16v and 16w and the main line bodies (the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w ), the materials for the U-phase insulating coating 12u , the V-phase insulation coating 12v and the W-phase insulating coating 12w and the like, and adjusting the inductances of the inductors 18 By changing the number of turns, the length or the like of a coil, it is possible to effectively reduce surge disturbances in a specific frequency band due to LC resonances.

The tubular shielding layer 22 surrounds the three main line body 11u . 11v and 11w and the three conductor layers 16u . 16v and 16w together, and the inductors 18 are inside the screened room 23 accommodating an unused space within the shielding layer 22 , whereby it becomes possible to reduce the size in comparison with a case in which the inductors 18 on the outside of the shielding layer 22 are provided.

Embodiment 2

Embodiment 2 of the present invention will next be described with reference to FIG 3 described. A line B with noise filter of embodiment 2 has a configuration in which the three inductors 18 are connected in a different manner from the above embodiment 1 way. Other structural aspects are identical to those of the above embodiment 1. Therefore, identical structural aspects are given identical reference numerals, and a description of these structures, functions and effects will be omitted.

In the above embodiment 1, the case connecting wire is 20 for connecting the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w provided with ground, and the three parallel branch wires 21 this case connecting wire 20 are each with an inductor 18 Mistake. In Embodiment 2, on the other hand, the case connecting wire is 20 not provided, the U-phase conductor layer 16u and the V-phase conductor layer 16v are over the inductor 18 connected, the V-phase conductor layer 16v and the W-phase conductor layer 16w are over the inductor 18 connected and the W-phase conductor layer 16w and the U-phase conductor layer 16u are over the inductor 18 connected. That is, the three inductors 18 are connected in delta connection. At the end sections on the engine 30 closer side of the U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w are neither the three conductor layers 16u . 16v and 16w still the three inductors 18 with the housing ground 40 connected.

In the line B with noise filter of Embodiment 2, at least two of the main line bodies 11u . 11v and 11w provided parallel to each other and at least two of the conductor layers 16u . 16v and 16w which the corresponding main body 11u . 11v and 11w are surrounded by the inductors 18 connected. The conductor layers 16u . 16v and 16w are only with the inductors 18 connected, and the inductors 18 are only with the conductor layers 16u . 16v and 16w connected. In this embodiment, a surge current in each of the conductors 16u . 16v and 16w through the capacitors 17u . 17v and 17w and the inductors 18 damped and to the other conductor layers 16u . 16v and 16w , thereby enabling a reduction of common mode noise, which is important when the conductor layers 16u . 16v and 16w with the engine cowling 31 or the like are connected.

The line B with noise filter comprises that in a three-phase AC circuit 10 included U-phase wire 11u , in common with the U-phase wire 11u in the three-phase AC circuit 10 included V-phase wire 11v , in common with the U-phase wire 11u and the V-phase wire 11v in the three-phase AC circuit 10 included W phase wire 11w that the U-phase wire 11u surrounding U-phase conductor layer 16u that the V-phase wire 11v surrounding V-phase conductor layer 16v and the W phase wire 11w surrounding W-phase conductor layer 16w and has a configuration in which the U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w over the inductors 18 connected to each other.

The three conductor layers 16u . 16v and 16w are only with the inductors 18 directly connected. Each of the inductors 18 is directly only with one each from the U-phase conductor layer 16u , the V-phase conductor layer 16v or the W-phase conductor layer 16w as well as with the remaining inductors 18 directly connected. In this embodiment, a surge current in each of the conductors 16u . 16v and 16w through the capacitors 17u . 17v and 17w and the inductors 18 damped and to the other conductor layers 16u . 16v and 16w which makes it possible to reduce common mode noise, which is important when the conductor layers 16u . 16v and 16w and the inductors 18 with the engine cowling 31 or the like are connected.

Embodiment 3

Embodiment 3 of the present invention will next be described with reference to FIG 4 described. A noise filter tube C of Embodiment 3 has a configuration different from that of the foregoing Embodiment 1 with respect to the use of a shock reducing filter 36 differs. Other structural aspects are identical to those of the above embodiment 1. Therefore, identical structural aspects are given identical reference numerals, and a description of these structures, functions and effects will be omitted.

The shock reduction filter 36 Embodiment 3 includes two separate U-phase conductor layers 16u , one of which is on the engine 30 closer side and the other on the inverter device 34 closer side, two separate V-phase conductor layers 16v , one of which is on the engine 30 closer side and the other on the inverter device 34 located closer side, and two separate W-phase conductor layers 16w , one of which is on the engine 30 closer side and the other on the inverter device 34 closer side. The U-phase conductor layer 16u , the V-phase conductor layer 16v and the W-phase conductor layer 16w which is on the engine 30 are located closer to the respective on the inverter device 34 closer lying U-phase conductor layer 16u , V-phase conductor layer 16v and W-phase conductor layer 16w connected. The U-phase wire 11u , the V-phase wire 11v and the W phase wire 11w include two separate U-phase capacitors 17u , one of which is on the engine 30 closer side and the other on the inverter device 34 closer side, two separate V-phase capacitors 17v , one of which is on the engine 30 closer side and the other on the inverter device 34 or two separate W-phase capacitors 17w , one of which is on the engine 30 closer side and the other on the inverter device 34 closer side.

Furthermore, the shock reduction filter includes 36 Embodiment 3 three inductors 18 which with the on the engine 30 closer lying U-phase conductor layer 16u , V-phase conductor layer 16v or W-phase conductor layer 16w connected and three inductors 18 which with the on the inverter device 34 closer lying U-phase conductor layer 16u , V-phase conductor layer 16v or W-phase conductor layer 16w are connected. The three on the engine 30 closer located inductors 18 are connected in star connection and with the housing ground 40 (the engine cowling 31 ), and the three on the inverter device 34 closer located inductors 18 are also connected in star connection and with the housing ground 40 (the inverter panel 35 ) connected.

Embodiment 4

Next, Embodiment 4 of the present invention will be described with reference to FIG 5 described. The noise filter tube C of the embodiment 4 has a configuration different from that of the foregoing embodiment 1 with respect to the use of a shock reducing filter 37 differs. Other structural aspects are identical to those of the above embodiment 1. Therefore, identical structural aspects are given identical reference numerals, and a description of these structures, functions and effects will be omitted.

The shock reduction filter 15 The foregoing embodiment 1 has three parallel branch wires 21 on, which with the U-phase conductor layer 16u , the V-phase conductor layer 16v or the W-phase conductor layer 16w connected, and the three parallel branch wires 21 are each with an inductor 18 provided and connected in star connection. The conductor layers 16u . 16v and 16w and the three inductors 18 are over the case connecting wire 20 with the housing ground (the engine cowling 31 ) connected. In Embodiment 4, on the other hand, the conductor layers 16u . 16v and 16w and the three inductors 18 not with the engine cowling 31 connected.

Further embodiments

• (1) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die Induktoren innerhalb der Schirmschicht untergebracht sind, können die Induktoren auch außerhalb der Schirmschicht untergebracht sein.
• (2) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die Schirmschicht die mehreren Leitungsgrundkörper insgesamt umgibt, kann auch eine Ausführungsform angewendet werden, bei welcher eine derartige Schirmschicht nicht vorgesehen ist.
• (3) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die drei Leitungsgrundkörper, welche die Dreiphasenwechselstromschaltung bilden, in Sternschaltung verbunden sind, kann die vorliegende Erfindung auch auf einen Fall angewendet werden, in welchem drei Leitungsgrundkörper, welche eine Dreiphasenwechselstromschaltung bilden, in Dreieckschaltung verbunden sind.
• (4) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die drei Leitungsgrundkörper die Dreiphasenwechselstromschaltung bilden, kann die vorliegende Erfindung auch auf einen Fall angewendet werden, in welchem die drei Leitungsgrundkörper keine Dreiphasenwechselstromschaltung bilden.
• (5) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die Anzahl der Leitungsgrundkörper drei beträgt, kann die vorliegende Erfindung auch auf einen Fall angewendet werden, in welchem die Anzahl der Leitungsgrundkörper eins, zwei, vier oder mehr beträgt.
• (6) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 flexible Litzendrähte mit einem kreisförmigen Querschnitt als die Leitungsgrundkörper verwendet werden, können auch schwer verformbare Sammelschienen, flache Kabel, bei welchen mehrere elektrische Leitungen parallel zueinander angeordnet sind, oder dergleichen verwendet werden.
• (7) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 alle Isolierschichten im Außenumfang der Leitungsgrundkörper integriert sind und in der beschichteten Leitung enthalten sind, können die einzelnen Isolierschichten auch im Innenumfang der Leiterschicht integriert sein oder derart zwischen dem Außenumfang der Leitungsgrundkörper und dem Innenumfang der Isolierschicht angeordnet sein, dass sie relativ zueinander verlagert werden können.
• (8) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 der Grundkörper der Leitung mit Rauschfilter zwischen dem Motor und der Wechselrichtereinrichtung angeordnet ist, kann die vorliegende Erfindung auch auf einen Fall angewendet werden, in welchem die Leitung mit Rauschfilter mit anderen Einrichtungen als dem Motor und der Wechselrichtereinrichtung zu verbinden ist.
• (9) Obwohl in den vorstehenden Ausführungsformen 1 und 3 der Gehäuseverbindungsdraht mit der Motorverkleidung verbunden ist, kann der Gehäuseverbindungsdraht auch anstatt mit der Motorverkleidung direkt mit der Fahrzeugkarosserie verbunden sein.
• (10) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 jede der Leiterschichten dem Leitungsgrundkörper entspricht und dessen gesamten Umfang umgibt, kann jede der Leiterschichten dazu eingerichtet sein, nur einem Teilbereich des Leitungsgrundkörpers in einer Umfangsrichtung zu entsprechen.
• (11) Obwohl in den vorstehenden Ausführungsformen 1, 2 und 4 die Induktoren nur auf der dem Motor näher liegenden Seite angeordnet sind und nur mit der Motorverkleidung verbunden sind, können Induktoren zusätzlich zu den Induktoren auf der dem Motor näher liegenden Seite auch auf der der Wechselrichtereinrichtung näher liegenden Seite vorgesehen sein und mit der Wechselrichterverkleidung verbunden sein.
• (12) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die Leiterschichten aus röhrenförmigem Metall sind, können auch blatt- oder bandartige Metallfolien, Drahtgeflechte, Sammelschienen aus Metall, Litzendrähte aus Metall, Einzeldrähte aus Metall, Kernmaterialien mit einer plattierten Oberfläche, leitfähige Kunststoffe, leitfähige Gummis oder dergleichen verwendet werden.
• (13) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 Einzeldrähte aus Metall als Induktoren verwendet werden, können auch Litzendrähte aus Metall als Induktoren verwendet werden.
• (14) Obwohl in den vorstehenden Ausführungsformen die Induktoren spulenförmig sind, können die Induktoren Magnetkerne wie etwa Ferritkerne sein.
• (15) Obwohl in den vorstehenden Ausführungsformen 1 bis 4 die Leiterschichten nur mit den Induktoren direkt verbunden sind, ist die Erfindung nicht darauf eingeschränkt. Parallel zu den Induktoren mit den Leiterschichten können auch Elemente wie etwa Widerstände, die eigenständig eine Rauschfilterfunktion aufweisen, Elemente, die zusammen mit den Leiterschichten und den Induktoren eine Rauschfilterfunktion aufweisen, oder dergleichen verbunden sein.

The present invention is not limited to the embodiments described above with reference to the drawings, and embodiments such as those described below are also within the scope of the present invention.

• (1) Although in the above embodiments 1 to 4 the inductors are housed inside the shield layer, the inductors may be housed outside the shield layer.
• (2) Although, in the above embodiments 1 to 4, the shielding layer entirely surrounds the plurality of conductive main bodies, an embodiment in which such a shielding layer is not provided may be employed.
• (3) Although, in the above embodiments 1 to 4, the three line main bodies constituting the three-phase AC circuit are connected in star connection, the present invention can be applied to a case where three line main bodies constituting a three-phase AC circuit are connected in delta connection ,
• (4) Although, in the above embodiments 1 to 4, the three line main bodies constitute the three-phase AC circuit, the present invention can be applied to a case where the three line main bodies do not form a three-phase AC circuit.
• (5) Although, in the above embodiments 1 to 4, the number of the line main bodies is three, the present invention can be applied to a case where the number of the line main bodies is one, two, four or more.
• (6) Although in the above embodiments 1 to 4 flexible stranded wires having a circular cross section are used as the conductor main bodies, it is also possible to use hardly deformable bus bars, flat cables in which a plurality of electric wires are arranged in parallel, or the like.
• (7) Although in the above embodiments 1 to 4, all the insulation layers are integrated in the outer periphery of the conductor main bodies and contained in the coated conductor, the individual insulation layers may be integrated in the inner circumference of the conductor layer or between the outer periphery of the conductor main body and the inner periphery of the insulating layer be arranged so that they can be displaced relative to each other.
• (8) Although, in the above embodiments 1 to 4, the main body of the noise filter line is disposed between the motor and the inverter device, the present invention can be applied to a case where the noise filter line having other means than the motor and the inverter device is to be connected.
• (9) Although, in the above embodiments 1 and 3, the case connecting wire is connected to the engine cowling, the case connecting wire may also be directly connected to the vehicle body instead of the engine cowling.
• (10) Although, in the above embodiments 1 to 4, each of the conductor layers corresponds to the conductor main body and surrounds the entire circumference thereof, each of the conductor layers may be configured to correspond to only a partial region of the conductor main body in a circumferential direction.
• (11) Although, in the above embodiments 1, 2 and 4, the inductors are arranged only on the engine-closer side and are connected only to the engine cowling, in addition to the inductors on the engine-closer side, inductors may also be on the engine side Inverter device closer side may be provided and connected to the inverter panel.
• (12) Although in the above embodiments 1 to 4 the conductor layers are made of tubular metal, sheet metal or tape-like metal foils, wire meshes, metal bus bars, metal strand wires, metal single wires, core materials with a plated surface, conductive plastics, conductive ones may also be used Rubber or the like can be used.
• (13) Although in the above embodiments, 1 to 4 metal single wires are used as inductors, metal strand wires may also be used as inductors.
• (14) Although the inductors are coil-shaped in the above embodiments, the inductors may be magnetic cores such as ferrite cores.
• (15) Although in the above embodiments 1 to 4 the conductor layers are directly connected only to the inductors, the invention is not limited thereto. In addition to the inductors having the conductor layers, elements such as resistors which inherently have a noise filter function, elements having a noise filter function together with the conductor layers and the inductors, or the like may be connected.

LIST OF REFERENCE NUMBERS

A, B, C, D

 Line with noise filter

10

 Three-phase alternating current circuit

11u

 U-phase wire (first line main body)

11v

 V-phase wire (second main body)

11w

 W phase wire (third line main body)

12u

 U-phase insulating coating (insulating layer)

12v

 V-phase insulating coating (insulating layer)

12w

 W-phase insulating coating (insulating layer)

16u

 U-phase conductor layer (first conductor layer)

16v

 V-phase conductor layer (second conductor layer)

16w

 W-phase conductor layer (third conductor layer)

17u

 U-phase capacitor (capacitor)

17v

 V-phase capacitor (capacitor)

17w

 W-phase capacitor (capacitor)

18

 inductor

22

 shield layer

23

 Shielded room

Claims (4)

Line with noise filter, comprising: a trunk main body; an insulating layer surrounding the conductive body; a conductor layer provided corresponding to the line main body, the insulating layer being disposed between the conductor layer and the line main body, and forming a capacitor in combination with the line main body; and an inductor connected to the conductor layer. Line with noise filter according to claim 1, wherein two of the main line bodies are provided parallel to each other, two of the conductor layers, one each of the two conductor layers corresponding to one of the two conductor bodies, via which inductors are connected, the conductor layers are connected only to the inductors and each of the inductors is connected to only one of the conductor layers and the other inductor. The noise filter line of claim 2, comprising: a first line main body included in a three-phase AC circuit; a second line main body which is included together with the first line main body in the three-phase AC circuit; a third main body connected in common with the first main body and the second main body in the three-phase AC circuit; a first conductor layer corresponding to the first line main body; a second conductor layer corresponding to the second conductor main body; and a third conductor layer, which corresponds to the third line main body, wherein the first conductor layer, the second conductor layer and the third conductor layer are connected to one another via the inductors, the first conductor layer, the second conductor layer and the third conductor layer are connected only to the inductors, and each of the inductors is connected to either the first conductor layer, the second conductor layer or the third conductor layer and to remaining ones of the inductors. The noise filter line according to any one of claims 1 to 3, wherein a tubular shielding layer surrounds a plurality of said conductor main bodies and a plurality of said conductor layers as a whole, and said inductors are disposed within a shielded space surrounded by said shielding layer.

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